The Filterbuy replacement rigid cell box air filter 20x20x12 without header (actual size: 19.38" x 19.38" x 11.38") ensures that your HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. The extended surface area created from the deeper pleats make them perfect for commercial settings (particularly in variable air volume systems) due to their enhanced ability to collect dust and other contaminants. MERV 14 synthetic media is recommended with its capability to trap 99% of dust particles while protecting your business from bacteria, smoke, smog, lint, pollen, mold, dander, and other forms of debris without impacting air flow. High quality construction features an ultra-fine design that functions exceptionally in humid environments while eliminating fiber shedding and prolonging the products lifespan by three times that of fiberglass models. Plus, our industrial grade galvanized steel frames are paired with a wire mesh backing and plastic fingers that ensure rigidity by withstanding fluctuations in air flow. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.